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//
// libavg - Media Playback Engine.
// Copyright (C) 2003-2014 Ulrich von Zadow
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
//
// Current versions can be found at www.libavg.de
//
#include "X11Display.h"
#include "../base/Exception.h"
#include "../base/Logger.h"
#include <SDL/SDL.h>
#include <SDL/SDL_syswm.h>
#include <boost/math/special_functions/fpclassify.hpp>
namespace avg {
X11Display::X11Display()
{
}
X11Display::~X11Display()
{
}
float X11Display::queryPPMM()
{
::Display * pDisplay = XOpenDisplay(0);
float ppmm = getScreenResolution().x/float(DisplayWidthMM(pDisplay, 0));
XCloseDisplay(pDisplay);
return ppmm;
}
IntPoint X11Display::queryScreenResolution()
{
IntPoint size;
// Xinerama query has been removed from here in order to fix #431
::Display * pDisplay = XOpenDisplay(0);
Screen* pScreen = DefaultScreenOfDisplay(pDisplay);
AVG_ASSERT(pScreen);
size = IntPoint(pScreen->width, pScreen->height);
XCloseDisplay(pDisplay);
return size;
}
float X11Display::queryRefreshRate()
{
::Display * pDisplay = XOpenDisplay(0);
int pixelClock;
XF86VidModeModeLine modeLine;
bool bOK = XF86VidModeGetModeLine(pDisplay, DefaultScreen(pDisplay),
&pixelClock, &modeLine);
if (!bOK) {
AVG_LOG_WARNING(
"Could not get current refresh rate (XF86VidModeGetModeLine failed).");
AVG_LOG_WARNING("Defaulting to 60 Hz refresh rate.");
return 60;
}
float hSyncRate = (pixelClock * 1000.0) / modeLine.htotal;
float refreshRate = hSyncRate / modeLine.vtotal;
XCloseDisplay(pDisplay);
if ( refreshRate < 20 || refreshRate > 200 || !(boost::math::isnormal(refreshRate))){
AVG_LOG_WARNING("Could not get valid refresh rate");
AVG_LOG_WARNING("Defaulting to 60 Hz refresh rate.");
return 60;
}
return refreshRate;
}
::Display* getX11Display(const SDL_SysWMinfo* pSDLWMInfo)
{
::Display* pDisplay;
if (pSDLWMInfo) {
// SDL window exists, use it.
pDisplay = pSDLWMInfo->info.x11.display;
} else {
pDisplay = XOpenDisplay(0);
}
if (!pDisplay) {
throw Exception(AVG_ERR_VIDEO_GENERAL, "No X windows display available.");
}
return pDisplay;
}
Window createChildWindow(const SDL_SysWMinfo* pSDLWMInfo, XVisualInfo* pVisualInfo,
const IntPoint& windowSize, Colormap& colormap)
{
// Create a child window with the required attributes to render into.
XSetWindowAttributes swa;
::Display* pDisplay = pSDLWMInfo->info.x11.display;
colormap = XCreateColormap(pDisplay, RootWindow(pDisplay, pVisualInfo->screen),
pVisualInfo->visual, AllocNone);
swa.colormap = colormap;
swa.background_pixmap = None;
swa.event_mask = StructureNotifyMask;
Window win = XCreateWindow(pDisplay, pSDLWMInfo->info.x11.window,
0, 0, windowSize.x, windowSize.y, 0, pVisualInfo->depth, InputOutput,
pVisualInfo->visual, CWColormap|CWEventMask, &swa);
AVG_ASSERT(win);
XMapWindow(pDisplay, win);
return win;
}
}
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